This R150 reward voucher is a hooks

So far when it comes to banking I don't have a problem...but these rewards they say they give when you swipe 10 times I feel like they just playing with us coz once you have chosen your type of voucher (when redeeming) it stops there you no explanation on how you can now continue to enjoy your rewards you will wait for the SMS that has your coupon you won't get it it's been 5 days now and nothing is happening